Experimental Study of LiCl/LiBr-Zeolite Composite Adsorbent for Thermochemical Heat Storage
Adsorption-based thermochemical heat storage is a promising long-term energy storage technology that can be used for seasonal space heating, which has received significant amount of efforts on the research and development. In this paper, the heat storage capacity of composite adsorbents made by LiCl...
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MDPI AG
2022-11-01
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| Loạt: | Buildings |
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| Truy cập trực tuyến: | https://www.mdpi.com/2075-5309/12/11/2001 |
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| author | Depeng Chen Xin Chen Zhiwei Ma Yaodong Wang Anthony Paul Roskilly Jian Zhou |
| author_facet | Depeng Chen Xin Chen Zhiwei Ma Yaodong Wang Anthony Paul Roskilly Jian Zhou |
| author_sort | Depeng Chen |
| collection | DOAJ |
| description | Adsorption-based thermochemical heat storage is a promising long-term energy storage technology that can be used for seasonal space heating, which has received significant amount of efforts on the research and development. In this paper, the heat storage capacity of composite adsorbents made by LiCl + LiBr salt and 3A zeolite was investigated. The basic characteristics of composite material groups were experimentally tested, and it was found that the adsorption composite with 15 wt% salt solution had excellent adsorption rate and adsorption capacity, which was considered as the optimal composite material. Furthermore, the heat storage density of the composite material could be as high as 585.3 J/g, which was 30.9% higher than that of pure zeolite. Using 3 kg of the composite material, the adsorption heat storage experiment was carried out using a lab-scale reactor. The effects of air velocity and relative humidity on the adsorption performance were investigated. It was found that a flow rate of 15 m<sup>3</sup>/h and a relative humidity of 70% led to the most released adsorption heat from the composite material, and 74.3% of energy discharge efficiency. Furthermore, an adsorption heat storage system and a residential model were built in the TRNSYS software to evaluate the building heating effect of such heat storage system. It is found that the ambient temperature will affect the heating effect of the adsorption heat storage system. The coefficient of performance (<i>COP</i>) of this model is as high as 6.67. Compared with the gas boiler heating system, the adsorption heat storage energy can replace part of the gas consumption to achieve energy savings. |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-09T18:26:40Z |
| publishDate | 2022-11-01 |
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| series | Buildings |
| spelling | doaj.art-b2bc32cc8a3c48c79d88ebe96691af102023-11-24T07:51:10ZengMDPI AGBuildings2075-53092022-11-011211200110.3390/buildings12112001Experimental Study of LiCl/LiBr-Zeolite Composite Adsorbent for Thermochemical Heat StorageDepeng Chen0Xin Chen1Zhiwei Ma2Yaodong Wang3Anthony Paul Roskilly4Jian Zhou5School of Architecture and Engineering, Anhui University of Technology, Maanshan 243000, ChinaSchool of Architecture and Engineering, Anhui University of Technology, Maanshan 243000, ChinaDepartment of Engineering, Durham University, Durham DH1 3LE, UKDepartment of Engineering, Durham University, Durham DH1 3LE, UKDepartment of Engineering, Durham University, Durham DH1 3LE, UKDepartment of Engineering, Durham University, Durham DH1 3LE, UKAdsorption-based thermochemical heat storage is a promising long-term energy storage technology that can be used for seasonal space heating, which has received significant amount of efforts on the research and development. In this paper, the heat storage capacity of composite adsorbents made by LiCl + LiBr salt and 3A zeolite was investigated. The basic characteristics of composite material groups were experimentally tested, and it was found that the adsorption composite with 15 wt% salt solution had excellent adsorption rate and adsorption capacity, which was considered as the optimal composite material. Furthermore, the heat storage density of the composite material could be as high as 585.3 J/g, which was 30.9% higher than that of pure zeolite. Using 3 kg of the composite material, the adsorption heat storage experiment was carried out using a lab-scale reactor. The effects of air velocity and relative humidity on the adsorption performance were investigated. It was found that a flow rate of 15 m<sup>3</sup>/h and a relative humidity of 70% led to the most released adsorption heat from the composite material, and 74.3% of energy discharge efficiency. Furthermore, an adsorption heat storage system and a residential model were built in the TRNSYS software to evaluate the building heating effect of such heat storage system. It is found that the ambient temperature will affect the heating effect of the adsorption heat storage system. The coefficient of performance (<i>COP</i>) of this model is as high as 6.67. Compared with the gas boiler heating system, the adsorption heat storage energy can replace part of the gas consumption to achieve energy savings.https://www.mdpi.com/2075-5309/12/11/2001thermochemical heat storagehygroscopic saltzeolitewater vapour sorptionenergy discharge efficiencyTRNSYS |
| spellingShingle | Depeng Chen Xin Chen Zhiwei Ma Yaodong Wang Anthony Paul Roskilly Jian Zhou Experimental Study of LiCl/LiBr-Zeolite Composite Adsorbent for Thermochemical Heat Storage Buildings thermochemical heat storage hygroscopic salt zeolite water vapour sorption energy discharge efficiency TRNSYS |
| title | Experimental Study of LiCl/LiBr-Zeolite Composite Adsorbent for Thermochemical Heat Storage |
| title_full | Experimental Study of LiCl/LiBr-Zeolite Composite Adsorbent for Thermochemical Heat Storage |
| title_fullStr | Experimental Study of LiCl/LiBr-Zeolite Composite Adsorbent for Thermochemical Heat Storage |
| title_full_unstemmed | Experimental Study of LiCl/LiBr-Zeolite Composite Adsorbent for Thermochemical Heat Storage |
| title_short | Experimental Study of LiCl/LiBr-Zeolite Composite Adsorbent for Thermochemical Heat Storage |
| title_sort | experimental study of licl libr zeolite composite adsorbent for thermochemical heat storage |
| topic | thermochemical heat storage hygroscopic salt zeolite water vapour sorption energy discharge efficiency TRNSYS |
| url | https://www.mdpi.com/2075-5309/12/11/2001 |
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